Simplified torque API
Added flush operation to graph editor und using it after undeliverable signal handler.
Added extra tests for VertexMap. All is well.
Added generic processing vertex as a foundation for other data-flow vertices.
Implementing Processing vertex state with list, inverts processing order.
Removed flushing after undeliverable signal, it's unnecessary.

Also changed scheduling: Only processing if there are no pending
messages.
Fixed bug where messageBus might not get flushed after triggering the undeliverable signal handler.
Added -optimize compiler option.
Filtering problematic Kryo dependency from assembly.
Improved Java 7 requirement description.